Mini Sudoku is a 6×6 sudoku variant — the same logic as classic 9×9 sudoku, compressed into a smaller grid with digits 1 through 6. Rows, columns, and shaded regions each must contain every digit exactly once. This guide covers the scanning and elimination techniques that make 6×6 boards fast and satisfying.
Mini Sudoku puzzle strategies
Mini Sudoku Puzzle Strategies
LogicCrack the grid · trains number logic
- Logical thinking
- Number sense
- Patience
Scanning, elimination, and region-overlap techniques for 6×6 sudoku boards.
Mini Sudoku rulesBasics
How 6×6 sudoku differs
Classic sudoku
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- 9×9 grid · digits 1–9
- Nine 3×3 boxes
Mini Sudoku
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- 6×6 grid · digits 1–6
- Six shaded regions
The smaller grid means fewer empty cells per puzzle, but regions overlap rows and columns more tightly — a single placement often unlocks three or four cells at once.
Technique
The fundamental scan
For every empty cell, ask: which digits are still legal?
A digit is illegal if it already appears in:
- The same row
- The same column
- The same shaded region
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RowColumnRegion
If only one digit fits, place it. This single technique solves most easy and many medium boards without advanced tactics.
Mini Sudoku regions are irregular shapes. When you place a digit, check all three groups it belongs to — pick the row, column, or region with the fewest empty cells and scan that group first.
Technique
Hidden singles
Sometimes every empty cell in a row appears to have multiple options — but one digit can only go in one cell in that row. That digit is a "hidden single."
Where can digit 4 go in row 1?
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4 fits here4 blocked by region
To find hidden singles: pick a row (or column, or region), then for each missing digit count how many cells could hold it. If the count is exactly one, place it.
Technique
Pencil marks (mental or on paper)
On harder boards, track candidate digits for each empty cell. When a placement eliminates a candidate elsewhere, update the list. A cell whose candidates shrink to one digit is ready to fill.
Puzzle Games highlights duplicate digits in red when you enter a conflict — use that feedback to catch mistakes early.
Approach
Region-first vs row-first
- Region-first — solve the smallest or most constrained shaded region, then expand.
- Row-first — scan each row for singles and hidden singles top to bottom.
Alternate between them when stuck. A region that seemed blocked often opens after a row scan on the other side of the grid.
Pitfalls
Common mistakes
- Forgetting region overlap — a digit legal in the row may still violate the shaded region.
- Guessing too early — Mini Sudoku boards on Puzzle Games are designed to be logic-solvable without guessing.
- Ignoring givens — locked clue cells anchor the grid; build outward from clusters of givens.
Difficulty
Difficulty and practice
Easy
Naked singles, basic scanning
Medium
Hidden singles, region overlap
Hard
Candidate tracking, cross-group elimination
Start on easy puzzles, then move to medium and hard when scans feel automatic.
Practice
Where to play
| Stage | What to do |
|---|---|
| Rules | Mini Sudoku how-to-play |
| Demo | Mini Sudoku demo |
| Archive | Mini Sudoku archive |
| Random | Random Mini Sudoku |
Mini Sudoku is an excellent gateway to logic puzzles generally — the scanning habits transfer directly to Queens, Tango, and other grid games.
FAQ
Guide FAQ
Quick answers about this puzzle type and how to practice.
Mini Sudoku uses a 6×6 grid with digits 1 through 6. Rows, columns, and shaded regions each must contain every digit exactly once — the same logic as 9×9 sudoku on a smaller board.
Scan rows, columns, and regions together. When a digit can only fit in one cell within a group, place it. Overlapping regions often unlock multiple cells at once.
Yes. Play Mini Sudoku online with archived dailies, an exclusive level track, random mode, and step-by-step solutions.
Keep exploring
Related pages
Play puzzles, read rules, or browse archives.